22020012121 has 8 divisors (see below), whose sum is σ = 22049539200. Its totient is φ = 21990505680.

The previous prime is 22020012109. The next prime is 22020012139. The reversal of 22020012121 is 12121002022.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22020012121 - 2⁹ = 22020011609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22020012151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3649335 + ... + 3655363.

It is an arithmetic number, because the mean of its divisors is an integer number (2756192400).

Almost surely, 2^22020012121 is an apocalyptic number.

It is an amenable number.

22020012121 is a deficient number, since it is larger than the sum of its proper divisors (29527079).

22020012121 is a wasteful number, since it uses less digits than its factorization.

22020012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10319.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22020012121 its reverse (12121002022), we get a palindrome (34141014143).

The spelling of 22020012121 in words is "twenty-two billion, twenty million, twelve thousand, one hundred twenty-one".